Machine for operating upon hides, skins, and leather



July 28, 1931- V G, E, MCLAUGHUN 1,816,154

MACHINE FOR OPERATING UPON HIDES, SKINS, AND LEATHER Filed June 28. 19285 Sheets-Sheet l G. E. M LAUGHLIN OPERATING UPON HIDES, SKINS, ANDLEATHER 5 Sheets-Sheet 2 July 28; 1931.

MACHINE FOR Filed June 28, 1928 July 28, 1931. G. E. M LAUGHLIN1,316,154

MACHINE FOR OPERATING UPON HIDES, SKINS, AND LEATHER Filed June 28, 19285 Sheets-Sheet 5 a lnven tor July 28, 1931; G. E.'MCLAUGHLIN 1,316,154.

MACHINE FOR OPERATING UPON HIDES, SKINS, AND LEATHER Filed June 28, 19285 Sheets-Sheet 4 l n/zzemtof' u y 1931- G. E. MCLAUGHLIN 1,816,154

MACHINE FOR OPERATING UPON HIDES, SKINS, AND bEATHER Filed June 28. 19285 Sheets-Sheet 5 Patented July 28,1931

STATE s PATENT OFFICE momma: MoLAUGrHLIN', or rnABonY, MASSACHUSETTS,ASSIGNOB TO THE Tunmm TANNING M CHINERY COMPANY, or PORTLAND, MAINE, ACORPORATION or name Application filed me as.

"873,790, granted Dec. 17, 1907, upon application of Rood and Perkins,pieces of work were presented .to .a bladed cylinderby means of a singlebed .roll movable between work receiving and work presenting positions.Just as the bedroll wasabout to presentfthe workrtothe bladed cylinderit pressed the work against a feed roll carried by boxes slidableverticallyin the frame of the machine. While machines of thistype.arestill-in generaluse', it isclear that there is a definite limit totheir capacity since'the operator must wait for the work tobe fed outofthe machine'before he can introduce a second piece. Moreover, while,in the use of such a machine the skilled worker is almost never indanger, although he works close to the bed roll and its cooperatingfeedroll, theflinexperienced or careless worker may occasionally be injuredby having a hand pinched'between the two rolls as the bed roll 1s movingto work presenting positionwith respect to. the bladed cylinder.

Objects of the present invention are to increase the capacity of leathervworking machines and to increase the safety factor so that eveninexperienced orcareless workers will'run' nosubstantial danger inoperating such machines.

j To'these ends, and in accordance with an important feature of theinvention, a plu- 'rality of bed rolls are provided in the illus-'trated machine so that'the operator may position a fresh piece of workon a bed roll in inoperative position ata safe distance froma feed rollwhile another piece previously introduced and operatively positioned bymovement of another bed roll from a similar'work receiving POSliZlOIl 1sbelng operatedupon by a work treating instrumental- MACHINE FOROIPERAT'ING fiPON HIDES, SKINS, AND LEATHER 1928. Serial No. 288,818.

ity, theresult being that the idle time of the operator is lessened andthe machine thereby increased in its productive capacity. Furthermore,since the wear on a pluralitv of a bed rolls is divided between them,adiustment and replacement is less frequently required for the samequantity of work produced. Conveniently, the bed rolls are mounted upona rotary member, which may be termed a turret, so that first one andthen another bed roll is swung into work receiving position andsubseipuently into work presenting position during the rotation of theturret member. Preferably, and as shown, the turret is locked with a bedroll in work presenting position with respect to the work treatinginstrumentality. Since the turret member, in the illustratedconstruction, is pivoted for rotation about central points in arms whichsupportthe bed rolls it follows that the bed roll at any given time inposition to receive work from the operator is spaced at a considerabledistance from the place where Work upon another bed roll is beingoperated upon. Hence, the operator is kept at a distance from the fieldof operations and is Working under conditions in which danger to himselfis reduced to a minimum. This Will be the more readily appreciated whenit is understood that rotationof the turret member is initiated by theoperator through a convenient member such as a foot treadle.

In order to prevent displacement of the piece of work after it has beenplaced upon a bed roll while the latter is in work re ceiving position,means is provided for maintaining each bed roll with a given surfacefacing in an upward direction during movement of the bed roll to workpresenting position. To accomplish this result the illustrated meansreferred to operates to turn the bed roll in a counterclockwisedirection contlnuously and at the same rate as the rotating turret wouldnormally reverse the upper and lower surfaces of the bed roll in eachhalf turn of the turret.

In a turret construction like that illustrated in the drawings, each bedroll in turn comes into co-operative relation with a feed or pinchroll.. Hence, to permit rotation of the turret member always in the samedirection and so that the bed roll may ed bygthe bed roll when itiscoming into work presenting positioinmeans 1S prov1ded' from'the' pathof the' bed rolls.

forlifting the'bed roll, the illustrated means I beingcontrolled by theturret member. An

advantage of this construction resides in the factthat 'too great apressure between the bed roll and feed roll might damagethe work,particularly in fleshing and unhairing operations inwhich the hides orskins which constitute the work are in a soft and more or lessgelatinous condition. V

' It a further important feature of the invention that ,meansunder thecontrol of the turret is provided for moving the feed roll'into, andholding it in, proper co-operative relation with respect to each bedroll in turn to cause effective feeding of the work irrespective of thesize of the bed .roll. This makes it possible to utilize a worn bed rolland anew bed roll in the sainelturret member. In other words, it is notnecessary to replace both worn bed rolls at the same time if there isstill considerable service to begotten from one of them. In thatcase thecompletely worn bed rollmay be replaced by a new bed roll properlyadjusted in the turret member, whereupon the turret controlled meansalready referred to will automatically adjust "the feed roll alternatelyto the worn bed roll'and to the new bed roll. In the illustratedconstruction, the turret controlled means for controlling the positionof thefeed roll are found .in cam projections or bosses on boxe'sinwhich the, bed rolls are mounted on the turret arms.

Since the boxes adjusted on the'turret to position thebed rolls withrespect to the work operating instrumentality, follows thatthe bed rollscontrol the positions of the" cam projections and, therefore, theposition of the fe'edfroll. These cam projections or bossesco-operatewith similar cam projections or bosses on levers which operatethe supports for the feed roll to move the latter into proper(to-operative relation .to each bed roll in turn.

Since each bed roll is pressed yieldingly toward the work operatinginstrumentality the bed roll for the purpose just stated is accompaniedby movement of the boxes in which the bed roll is mounted, it followsthat the cam projections or bosses on the boxes change their positionsin. accordance with variations in the thickness of the work. Hence thefeed roll controlled by the cam projections or bosses is automaticallyadjusted' to the thickness of the Work, approachingthe bed roll moreclosely for; en-

gagement with thin 'piecesof work and receding somewhatfor thickerpieces of work or for thick portions of the same piece of work, so asnot to injure the latter by too severe feeding pressure. 7

In order that the rate at which the work passes the work treating.instrumentality may be variedito suit varying conditions, improved meansis provided under the control of the operatorto vary the speed of thefeeding means for 'thework whilethe speed of the treatinginstrumentality remains unchanged. As shown, this means comprises a setof gears of various sizes and a manually controllable lever forselecting one of the gears for introduction into the gearing for drivingthe feed roll. V 1

Other features of the invention relate to constructions andarrangements'by which the bed rolls may be adjusted with relation to thework treating instrumentality, illustrated as a bladed cylinder, so asto compensate for wear of the surfaces of the bed rolls, other meansbeing provided for ad'- justing the tension of springs which back the;

bladed cylinder.

- 'These'and other features of the invention and novel combinations ofparts will now be described in detail by reference to the accompanyingdrawings and then pointed out more particularly in the appended claims.

In the drawings, 7 Fig. l is a'view in end elevation of a fleshingmachine embodying the invention;.

Fig. 2 is a plan view fromabove of the machine shown in Fig. l; v c

Fig. 3 is a front elevationv of the machine; Fig. his a detailillustrating diagrammatically adjustments of thebed rolls with respectto the bladed cylinder and of the feed rolland bladed cylinder withrespect to the bed rolls; c

Fig. 5 is an end view, partly in section,

illustrating the bed rolls, the bladed cy inder, and the feed roll, witha bed roll approaching work presenting position;

7 Fig. 6 is a view similar to Fig. 5 with one of the bed rolls inco-operative relation to the bladed cylinder and the feed roll, thisview being a section along the line VI-VI of Fig. 2;

. 6 xandl7, respectively, the only difference be- 'ing thata wornbedrolloccupies the positions of thenew bed roll of Figs. 5, 6 and 7; Fig. 11illustrates diagrammatically the adjustment of the bladed cylinder withrespect to the bed rolls;

.- Fig. 12 is a detail view of one of the turret arms illustrating theadjusting means for the 1 bed. rolls and also the adjusting means forvarying the tension of the springs which back the bed rolls, the viewbeing of Fig 2; and

a section taken along the" line XII-XII Fig. 13 is a detail view of thebed roll drivingmeans taken along the line: XIIIXIII ofFig. 3.

In the illustrated machine which. sat

signed especially forv fleshingoperations cylinder sup portedupon'ashaft 22 (Figs.

1,52, and 11) the ends of which are journaled'in boxes of similarconstruction and arrangement. Oneof these boxes is shown at 24(Fig-. l1)supportedfor ad ustment upon astationary framemember 26 having a,horizontal bracket '28. slotted, as at '30,

to receive slidably-a securing bolt 82 adapted tosecure the box 24'"infadjusted position. Forsecuring adjustment of the boxQ, the bolt .32is first loosened and then a screw threaded member 34 is properlymanipulated to adjust the box 24 afterwhich the bolt 32 is againtightened to hold the box in'its new position, the adjustment oftheboxes being for the purpose of positioning the cylinder 20 in properrelation to Work presenting'means which will now .be described.

The work presenting means referred to in "the preceding paragraph'comprises a plurality of rubber-covered bed rolls, two bed rolls, 40and 42, being the number employed I I Since the machine is speciallyconstructed so as to makeit possible to utilize a worn bedroll and atthe same time a new bed roll, the

parts are shown adjusted for a worn bed roll 40 and a new bed rollQ,both bed rolls being carried in aturret. member comprising turret arms4-4, d6 (Figs. 2 and The arms 44, arecach carried. by, and fixedlysecured to, a shaft. 48 mounted in bearings 50st each endofthe machine,each turret arm being mounted at its central point upon itscorrespondingfshaft so that the, turret arms maybe of equal length, androtatable upon rotation of the shaft 48. Upon inspection of Fig. 2,- itwill be observed that the'bed rolls 40,42 arecarried at their opeachhalf turn of the turret.

posite ends by boxes 52 mounted in opposite ends of each of the turretarms e-l and 46. Preferably, and as shown, each bed roll 40,

42comprises a shaft 54, 55, respectively,

able about thecenter of the shafts 48 to present the bed rolls 40, L2successively in work receiving and work presenting positions. When theroll 40 is in work receiving position, as in Figs. 2, 3 and 6, theoperator may place a piece of work upon this bed roll with perfectsafety, since it is at a considerable distance from the bladed:

cylinder 20 and from a feed roll 60,.the latter being sometimes referredto as a pinch roll, since it co-operates with the bed rolls in turn togrip work in work presenting position with respect to. the bladedcylinder. After the work has been operated upon through the co-operationof the bladed cylinder 20 and the bed roll 12 in Figs. 2, 3 and 6, theoperator depresses a treadle 62 whereupon the turret member is rotatedto bring the bed roll 42 to work receiving position, at'the same timecarrying the bed roll 40 to work presenting position, and this operationis repeated as often as the operator ets a fresh iece'of work aositioneduaon' the bed roll in work r ceiving position.

As already stated, each of the shafts 54;, 55, carries at its opposlteends welghted members 56 so constructed and arranged that the center ofgravity is considerably below the axis of the shaft. Carried by anarm'70 (Figs. 1, 2, 3 and 6) projectin upwardly from each weightedmember 06 is a-springpressed ratchet pawl. 72 adapted to engageselectively with teeth of a ratchet wheel 74 pinned to the adjacent endofthe The spring pressure back shaft 54 or 55. ofthe pawls 72 issuificient to cause the shaft or to turn with the weighted members 56 ateach end of the shaft. Hence, as the turret arms 44, 46 are revolved,the weighted members 56 operate to rotate the bed roll in acounterclockwise direction continuously and at the same rate as therotating turret would normally reverse the upper and lower surfaces ofthe bed roll in Thus the members 56 operate to keep the bed rolls 40, 42always with the same portion of their cylindrical surfaces facingupwardly so that the line of the hide or skin positioned by the operatorto lie along the top of the bed roll while the latter is in workreceiving position will remain on top during travel of a bed rollinwardly to work presenting czi ,-(Figs. 2, 3 and 13) fixedly secured toeach bed roll, comes into mesh with a similar gear 80 mounted upon shaft82 of the feed roll 60. Since the feed roll 60 is driven continuouslyand positively during the opera- 'tion of the machine, it is preferableto have the gear 80 yieldingly mounted upon the shaft 82 so, asgradually to overcome the inertia of the bed roll which starts fromrest. For this'reason the gear 80 has attached thereto a lug 81 which isnormally held by a,

' spring 84 against a face 85 on a collar 87 fixed to the shaft 82. Uponmeshingof the gearsfl78and 80 the spring yields to permit thelug 81 toengage an opposite face 89 on the collar 87 by'which the gear 80 isdriven positively.

In the meantime the spring 84 has operated to overcome the inertia ofthe bed I roll. Furthermore, the parts just described serve as a lostmotion connection between the bed and feed rolls to insure that the bedroll does not start positively in rotation until just before the bedroll presents the work to the cylinder. .Upon meshing of the gears 7 8and 80 the bed roll .40 or 42, as the case may be, begins to. rotate inthe direction of the arrow (Figs. 2, 6 and 13) to feed the work past thebladed cylinder 20 and ina direction toward the operators position atthe front of the machine, the

feeding movement of the bed roll beginning ust an. instant before thework is pressed against the bladed cylinder, to insure that the work isgripped between thebed roll and itsico-operating feed roll 6O.v beforecontact with the bladed cylinder which otherwise might jerk the piece ofworkfrom the bed roll. As soon as the'gears 78 and 80 mesh with eachother and the bedroll begins to rotate the pawl 72 ratchets overtheteeth of its ratchet wheel 74, thereby permitting the weightedmembers 56 at each end of'the bed roll to remain in depending position.7 I

' In order te permit adjustmentof each bed roll independently of theother so that they may co-operate properly with the bladed cylinder andwith the feed roll when in work presenting position, each of the turretarms 44 and 46 is provided with meansfor accom plishing individualadjustment of the boxes 52 which afford journal bearings for the shafts54 and 55 of the bed rolls; Upon reference to Fig.12 of the drawings itwill be observed that each box 52 has extensions 90 screw threaded toreceive. screw threaded bolts 92, the other ends of which are movablyreceived in smooth-surfaced perforations 94 in end plates 96 bolted tothe adjacent end of the arm 44 or 46. 7 Upon each bolt 92sis a set, nut98w for holding the bolt in adjusted position on the box 52.. Betweeneach box 52 and anassociated plate 100 is a spring 102 for yieldinglybacking the box 52 so that the bed roll, carried at its ends by twoboxes 52 in corresponding ends of the turret arms 44 and 46, may yieldand thereby accommodate variations in the thickness of the work passingbetween the bed roll and the bladed cylinder. 'For adjusting the tensionof each spring 102 independently of the position of its associated box-52, the plate 100 has projections 104 adapted to receive the screwthreaded ends of bolts 106, the head, ends of which pass movably throughperforations in projections .108 extending from the body portion 110 ofthe arm 44 or 46. Proper manipulation of, the bolts 106 will serve toadjust theplate 100 in a manner that will be readily understood." 1

When a bed roll and bladed cylinder are new and, therefore, of full sizethey are positioned in the :co-operative relationship shown in fulllines in-Fig. 4 and in this position of the bed roll its center willdescribe .a circle, during rotation of the turret arms 44, 46, whosecenter is in the center line of the shafts 48 (Fig. 4). As the bed rollwears away it must be adjusted so that its axis is beyond the circlementioned, so as to keep it at the proper spacing with respect to thecylinder 20. In this same Fig. 4, it will be observed that the cylinder20 as it wears away will be adjusted to the right in said figure'so asto keep the line ofcontact between the bed rolls and the cylinder alwaysin the same vertical plane and therefore in proper relation to the feedrolls 60.

In this figure, the bladed cylinder 20 is shown in full lines indicatinga new full sized cylinder, it being also shown in'dotted lines 20a toindicate the position of a much worn cylinder of relatively small size.Fig.

4 also shows the bed roll 42in full lines as a new normal-sized bed rolland, in dotted lines 42a, the samebed roll after it hasbGQOHlBWOIIl'EtIld much reduced in size, ad-

justment havin been made from time to time tokeep the worn bed roll inproper spacing with respect to the bladed cylinder. Furthermore, in thissame figure the feed roll 60, with its fiuted surface, is shown in fulllines in the position it occupies when co-operating with a newfull-sized bed roll such as that at 42, while in dotted lines the samefeed roll 60 is shown adjusted to the worn bed roll, shownindottedlines' at 42a.

In passing, it may be stated that adjustment of the feed roll 60 to bedrolls of different the incbining bed roll, the turret arms 44, 46

are each provided with lifting projections 116, 118upon opposite sidesthereof each I} pro ection carrying a cam roll 120 each adapted to enteralternately a cam slot 122 in a lifting lever 124, there being a lever124 at each end of the machine pivoted 126 upon a stationary standard128. Hence a description of one lever 124 and the parts connected to andoperated thereby will apply equally 'to the other lever. At 130 thelifting lever 124- is provided with a roll adapted to travel ina slot132 in a U-shaped member'134 pivoted about the axis of a roll 136 whichis movable along a slot or guideway 1881 in the frame post 140. Pivotedupon theaxis of the roll 136 is a linlrmemher 142 which passes slidablythrough the back wall of the guideway 138, a spring 144 being interposedbetween said back wall and the adjacent edge of themember 134, the

construction and arrangement being such that'the U-shaped member 134 mayyield under pressure of a lever now to be described. Pivoted at 150upon-the upper arm of the iJ-shaped member 134 is a lever 152, the lowerend of which carries a roll154 which is movable in a vertical directionwithin a slot 156 of a guideway member 158 rigid with the frame post140. At its upper end the lever152 is provided with a roll 160 movablein a slot 162 obliquely arranged in a supporting arm 164 pivoted at 166to the upper end of the frame post 140. At one end the arm164 carries abox 168 which provides a journal bearing for one end of v the shaft 82of the feed roll 60. At its other end each supportingarm 164 carries aweight 170 (Figs. 1 and 2) which be adjusted upon the arm ands'ecured infixed position, thepurpose of the weights 170 being tocounterbalance thegreater part of the weight of the'feed roll carried at the forward endof the arms 164.

As the turret arms 44, 46 swing about the centers oftheshafts 48 tobring one of the bed rolls 40, '42 into cooperative relation withrespect to the bladed cylinder 20, one of the'rolls 120onthe liftingprojection 116, 118 engages within the slot 122 of the liftin lever124(Fig. 5). Continued movement or the turret in the same directionlifts the lifting levers 124 which, through the Usshaped levers134, movethe levers 152 in an'upward direction thereby liftingthe forward ends ofthe feed roll supporting levers 164. In this way the-feed roll 60 islifted by force applied indirectly by the turret. The feed roll is notlifted by the bed roll levers 164,

to adjust the feed roll 60 to the bed roll coming into co-operativerelation with re spect to the bladed cylinder, as will presently bedescribed.

Afterthe piece cf work has been operated upon by the bladed cylinder,the operator depresses the treadle 62 and thereby initiates anotherrotative movement of the turret so that the bed. rolls may move fromwork receiving to work presenting positions and vice versa. In orderthat the bed roll which has been presenting the work to the'bladed 'nder20 may move away from that position it is necessary that the feedroll becarried upwardly out of the way, this movement being indicated in F ig.7 of the draw ings. Here, again, it is desirable that the feed rollshould be moved upwardly by power supplied by the turret, and notthrough pressure of the rubber coveredbed roll against the rotatingbrass roll 60 with its fluted surface. Hence, the lifting levers 124arev swung upwardly by the rolls 120 in the further movement of theturret, therebylifting the U-shaped levers 134 and the levers 152connected thereto. Fig '7 shows a roll 120 as it is about to escape fromthesl'ot 122 in. the lifting lever 124. At this time, the bed rollihaspassed beyond the feed roll 60. Hence, when the rolls 120 leave thelifting levers 124, the latter together with their connected leversleading up to the feed roll supporting levers 164 and the feed roll 60will all drop throughthe force of gravity, so that these parts may bepicked up again as the next bed roll is approaching work presentingposition with respect to the bladed cylinder 20. To pre vent unnecessaryjarring of the parts as they drop, there provided a spring supportedabutment member 173 positioned'inthe path of each of the lifting levers124* the said levers also operatev so that the latter contact with anddepress the abutnients' ieldin l in the downward movement of the liftinglevers and theparts supportedthereby including the feed roll 60unti'lthe abutments reach stationary positions with springs 175 fullycompressed.

As shown most clearly in Figs. 5 to 10.; inclusive, of the drawings the.lever 152, and this applies to lever 152 at the other end of themachine, is provided with a boss 169 ada )ted to be en a ed bv aboss 171on.

thesurface' of each of the two boxesf52 at that end of the machine asthe latter come alternatelyinto alinement with 11.11116: joining thecenters of the bladed cylinder in predetermined relation with respect tothe bed roll 40 or 42, except for the yielding arrangementprovided bysprings 174 which back the feed roll'60 in a manner which willhereinafter be described. This movement of the lever 152 takes place toa very slight extent where a new full-sized bed roll is being used; 'Asthe bed roll 40 or 42 wears away it is adjusted toward the left, thatis, toward the bladed cylinder to keep in proper co-operative relationthereto and with each slight adjustment the boss I 171' on each box 52causes a greater move- U-shaped member 134 to the left in Fig.9

ment, of the lever 152 by contact with the boss 169 on thelever,therebycausing the feed roll 60, by the action of the roll 160 inthe cam slot 162, to move downwardly a'greaterfl distance to come intoco-operative relation with respect to the worn bed roll. An'extreinecase of this is illustrated in Fig. 9 of the drawings, in whichthewellworn bed roll 40 is shown in work presen ing position withrespect to the bladed cylinder 20. Since-the worn bed roll '40 and itsjournal boxes52 have been adjusted in 1 the manner and for the reasonsindicated in Fig. 4, the boss 171 is positioned much further to'the leftin- Fig. 9 than is'the boss '171 on the corresponding box of. bed

'roll 42, in Fig. 6, for instance. This position of the boss 171 in Fig.9 causes the lever 152 to have its upper end moved a considerabledistanceto the left,'in which "case the roll 160 at the upper end ofthelever 152 is caused, to ride the full distance alongthe'. slot 162,therebycausing maximum depression of thelever 164. In this way the feedroll is automatically adjusted with respect to the bed roll as each bedroll 40 and42 comeialternately into work presenting position withrespectto the bladed cylinder 20. In the described movement of the lever152 it turns about its lower end'as a pivot, the pivot being in the roll154 which is located wi-thintheslot 156 of the stationary guideway. 158."Hence, the described movement of] the lever 152 shifts the against thetension of the spring. 144x It is clear, then that'spring 144 tends tokeep the levers 134 and 152 over to the extreme right as their initialposition of rest from which they may be displaced by the boss 171 comingin contact with the boss 169, on the lever 152. 1 Since thelever 1520011-.

nects the U-shaped lever 134 rigidly (though adjustably) with; the lever164, it follows. thatthe lever 124 is also held rigidly with respectto-th'elever 164 since the lever 124 ha a roll at .130 confined withinthe slot 132 of the lever 134., H ence'fthe'feed' roll is held lockedwith'respect to the "bed roll" on the turret by reason of'the engagementof the roll 120 within the slot '122 of the' lever 124,except as thefeed roll may yield against the springs 174. For-locking'the turret witha bed roll inoperativeposition, the means for rotating'the shafts 48through: eachhalf revolution comprisesa stop block I 183 which operates,to hold the turret arms locked with the bed rolls in work receiving.

and work presenting posit-ionsrespectively;

as will now he described. 1 1

Upon. reference to-Figs. 1,, 2 and'3, the driving means for the shafts48 are seen to. comprise a sprocket wheel 190 fastened. to each shaftand about which passes a sprocket chain 192 which engages at its otherend with'a second sprocket 194 fixed to shaft. 196. This shaft 196 isdriven by a gear 198 (Fig. 2) which is constantly in mesh with ,afpinion200 normally loose on a shaft 202 arranged to be driven continuouslyrfrom any desired source of power through connections toa power pulley204 fixed upon the end of the shaft 202. Pinion-200m fixed to a wheel206 which is also loose on the shaft but which is adapted to be clutchedthereto through the, operation of a coneclutch of well-knownconstruction compris ing a cone member 208(Fig. 2).- Carried by a shaft209 which operates the clutch is a stop lever 211 which atits upper enddrops into a slot 213 in the stop block 183, the construction andarrangement being such that as the clutch is thrown in the stop lever 11is retracted to freethe stop block. The sto block is provided with acamsurface 215 adapted to hold the lever 211 in position to maintain theclutch lever in operative or clutching position. When the stop lever 211engages in the slot 213 it causes the turret to stop with the bed roll40or 42 in operative relation to the cylinder 20 and maintains it lockedin such relation. Henc'e, at each turn of thewheel 206 the stop lever211 drops into the slot213 and holds the stop. block 183 in lockedposition. Sinceall of the connections between the stop block 183on s1aft 196 andthe sprockets190 on the shafts 48 are positive,'it is-clearthat the turret arms are held-in locked position also with the bed rolls40, 42 one in work receiving and the other in work presentingposition.

Upon inspection of Fig. '6' of the drawings, it will be observed thatthe 109x168 for supporting one endof the feed roll 60 'is 'slidablevertically within a guideway17 2,

a spring 174 being interposed between the box 168 and a collar 17 6adjustably mounted on a block 17 8 at the upper end of the guideway 172.As shown, thecollar 176 isse-V cured to ,n adjustable member 180 whichis screw threa'dedwithin thebl0ck-l78 so astoj'be adjustablewitlirespect thereto to which is. secured to the box .168 to limit themovement of the box under pressure of the spring 174, it beingunderstood, however, that the box 168 may move upwardly within I theguideway 172,; the spring 174; yielding to permit this movement of thebox 168 whereby the feed roll 60 supported by the two similarly arrangedboxes 168 at the for ward ends of lever 16 may accommodate variationsinthe thickness of the work passing between it and the bed roll 40 or 42.

For driving the feed roll 6O there is provideda sprocket wheel 220 (Fig.2) fixedly secured to the continuously driven shaft 202. Passing aroundthis sprocket wheel isa chain 222 (Figs. 1 and 2) which also engages anddrives a sprocket wheel 224 on a countershaft 226. At the other end ofthe countershaft is a pinion 228 cnstantiy in mesh with a pinion 230(Fig. 1). This pinion 230- is adapted to be shifted longitudinally ofpinion 228 to come into meshselectively with one of the three gears 232,234:, 236 fast on ashaft 238, the purpose being to vary the speed of theshaft 23-8 by means under the control of the operator, the said meansincluding the pinion 230 and a handle lever 2&0 by which the pinion 230may be shifted tomeshselectively with the gears'232, 234., 236. Uponinspection of Figs. 1 and 2 it will be observed that the lever 240 maybe locked in its'adjusted position by means of a spring-pressed lockingpin 242 receivable in any one of three looking recesses 2 1 4: 2).Secured to the shaft 238 is a sprocket wheel .250 around which passes achain 252 engaged also with a sprocket 254: secured to the shaft 82 ofthe feed roll 60 for driving the latter continu ously while the machineis in operation. The bladed cylinder is also driven con,- tinuonsly inthe illustrated construction by means of a power pulley 260 secured upontheshatt 22' of the cylinder at the righthand end thereof in Fig.2 ofthe drawings.

In operating the illustratedmachine a hide or'skin is placed upon thebed roll 40 (Fig.2) and the machine started in operation by. depressingthe treadle 62. Depression of the treadle initiates a half revolution ofthe turret comprisingturret arms 44:, 46

during which the bed roll 40 isrnoved from 4 work receiving position(Figs. 2 and 6) to work presenting position (Fig. 7 During rotation ofthe turret, thebed roll 40 is turned by its weighted members 56 so thatthe roll maintains the same portion of its cylindrical surface facing inan upward di-' 'rection, thereby retaining in place the hide or skin VJwhich is folded over the roll with substantially equalportions-depending from each side otthe roll. Finally the bedroll 4:0swings intoplace (Fig. 9)=to present the work tothe bladed cylinder 20.While the turret is moving in the manner described, the operator picksup another piece of work and promptly places it upon the bed roll 42 asthe latter reaches work receiving position indicated .in Fig. 9. He thenreaches over bed roll 4-2 (which is stationary at this time) and thework thereon and grasps thenear portion of the piece of work which isbeing fed out toward him on the bed roll 40 while the cylinder 20 isoperating on the portion of the work between it and the bed roll. Sinceeach piece of work is folded over a bed roll with substantially equalparts depending on each side of the bed roll, the cylinder operates uponapproximately one half of each piece of work at each depression of thetreadle. As soon as the work is free from the cylinder 20 the operatoragain depresses the treadle 62 whereby the bed roll 42 travels towardwork presenting position with respect to the cylinder 20 at the sametime that the bed roll 40 is traveling toward work receiving position.hen it gets in this position (Fig. 6) the operator places upon this bedroll the piece of work which he has just removed from it, in themeantime having changed it around or end for end so as to have theuntreated portion facing toward the bladed cylinder. He then reaches forthe piece of work on the bed roll 42 and supports portions of that pieceof work while it is being fed out toward him from between the bed roll42 and the cylinder 20. As soon as this piece of work is free he againdepresses the treadle 62 following which the bed roll 40 moves towardthe bladed cylinder 20 with the half treated piece of work thereon. Whenthe bed roll 42 reaches work receiving position, indicated in. Fig. 9,he reverses the piece of work and hangs it over the bed roll 42 andagain depresses the treadle. When the bed roll 40 reaches the bladedcylinder 20 treatment of the piece of work on this bed roll is sooncompleted and it may be allowed to drop upon a conveyor (not shown).Ordinarily, however, the operator will grasp it as it being fed outtoward him and when free will place it upon a horse near at hand, thenwork is operated upon twice while supported on the same bed roll,thereby insuring more certainly equal treatmentof both halves of eachpiece of work.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on lee thework, and'a plurality ofbed rolls for supporting pieces of work andmovable in succession to present the pieces of work in turn to theoperating instrumentality, means for driving the .work presenting bedroll during co-operation thereof with said'instrumentality in effectingtreatment of the work, and means for supporting the bed rolls in spacedrelation with respect to each supporting pieces of work and movable insuccession along acircular path to present the pieces of work in turn tothe operating instrumentalit means for driving the work presenting bedroll during co-operation thereof with said instrumentality in eiiectingtreatment of the work, and means for supporting the bed rolls in spacedrelation with respect to each other and their driving means to permitpositioning of work on one bed roll while another bed roll is in workpresenting position with respect, to said instrumentality.

3. In a machine for operating upon hides, skins, leather and othersimilar pieces: of work, an instrumentality for operating on the work, aturret member, and a plurality of bed rolls carried by the turret memberand movable in succession to work receiving position and subsequently towork presenting position for co-operation with the operatinginstrumentality, and means for rotating each bed roll while in workpresenting position, the turret being stationary during such rotation ofthe bedroll.

4:. In a machine for operating on hides, skins, leather and similarpieces or" work, an instrumentality for operating on the, work, and aplurality of bed rolls each movable" bodily between a'work receivingposition and a work presenting position with respect to the workinginstrumentality, each bed roll being rotatable while in work presentingposition to present successive portions of work supported thereon forthe operation of the operating instrumentality,

and one bed roll being stationary. in work receivingposition whileanother bed roll is presenting the workto the operating instru-'mentality. I

5. In a machine for operatingon hides, skins, leather. and-similarpieces of work, an instrumentality for operating on the work, aplurality of work supports, a turret for carr in the work su ortsbetween work receiving and work presenting positions with'respect totheoperating instrumentality, and means for driving each work support inturn while it is in'work presenting position, each work support beingstationary while in work receiving position.

6. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an .instrumentality for operating on the work, aturret member, a plurality of bed rolls carried by the turret member andarranged to be presented in succession for co-operation with theoperating instrumentality, each bed rollbeing adapted to have a piece ofwork looped thereover and to carry it from work receiving position to awork presenting position with respect to said instrumentality, and meansunder the control oii the operator for determining the time of lrotationof the turret member.

7 In a machine for operating'upon hides, skins, leather and othersimilar pieces or" work, an instrumentality for operating on the work, aturret member, a'plurality of bed rolls carried by the-turret member andarranged to be presented in succession for co-operation with theoperating instrumentality duringrotationot the turret member, and meansfor locking the turret member with one bed roll in co-operative relationwith respect to the operating instrumentality and another bed roll" inwork receiving position. i

8. In a machine for operating on hides, skins, leather and similarpieces of work, an instrumentality. for operating on the work, aplurality of work supports, a turret for carrying the work supports topresent each work support in turn in co-opera- 'tive relation withrespect to the operating instrumentality, and means for locking theturret with one work support in the recited co-operative relation andwith another work support in a work receiving position.

9. In a machine for operating upon hides, skins, leather and other,similar pieces of work, an instrumentality for operating on the work, aturret member rotatable about an axis parallelto the operatinginstrumentality, a'plurality of bed rolls carried by the turret memberand arranged to be presented in succession during rotation of the turretmember for co-operation with theoperating instrumentality, power'meansfor rotating the turret member, means operative to lock the turretmember with one of the bed rolls in co-operative relation to theoperating instrumentality, and means under the control of theoperator'tor unlockingthe turret member.

10. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work, aturret member rotatable about an axis parallel to the operatinginstrumentality, aplurality of bed rolls carried by the turret memberand arrangedto be presented in succession during rotation of the turretW5 bee mils "nieiri ber forco eperatibn with theope'ifatihginstrumentality, power means for'rotati'rig 'the trirret' niehiber,said'power ineans'bfing operative "also to lbe'k "theti1rr tfinen1ber withthe the bed rolls in eO-Gper'atiVe "ielati'c-n to *the operatinginstrlimeiitality, and me a'ns finder the Scontrol 5 of the operator for"initiating"bfieration of the power 7 means and for lii'iloeking thetiirretiineinber 510 s'ininlfiine'eu'sly with the initiation ofthe ro-"tatioifof 'the tiirrt member. L

11. ine -memerott eratingnpcmiides, 'slrins, leath'er and ethersiir'iilar pieces of "week, an in'strnrnenta-lity "for "operatiiigfonthe Work, "a Work feeding mmber "inolinted adjacent to the operatingiiistrliinentalit'y, and a lpliirality of bed rolls ihovable in *suc-*eefssion frorn -a position of *spa'cedfrelation XVith aes ea to theoperating 7 instrumental- 2 iity and the'woi k reading inenib'er intoco-'o'pe'faitii e eia'tion theret'o to secure treatmerito-fsiiccessivepiecesiof irvtirk. r

in a machine for operating upon hides, "skins, leatherfand ether similarpieces of W e an m'l fi "ri t "ani at n Li the-work, a ivork feedingIrieniber mounted adjacent to the "operating 'i'nstrninentaIity, a p'lurality of bed rolls for supporting fpie'ces of Workfia'rid a turretfnernber parrying the rolls and rotatable to the infi'snocession fro'rnfa work receiving p-osition-inm EO-operaftije relation fivith re,

speet-to the' operatiirg ins'trume'ntality and theWork feeding meinber.I I v In a machine for operating on hides, skins, lea the1flandfsiinilar pieces of Work, an instrnm'entaiity for operating o theWork, a plurality of bed rolls for presenting pieces of lwork siieee'ssiiiely to tlife operating instriirnentality, a feed roll forcooperation with eaeh bed roll iii tiirn for feeding the 'it' brk pastthe operating instrurriehtality, andnieairs controlled by the positionof each bed mirror controlling the ,p0sition of the feed roll'ivithrelationto the bed roll. "1'4. In a machine for operating on hides, slrihs, leather and similar pieces ofwork, aninstrunientalityforfoperating on the work, a plur'ality of bed rolls forpresenting pieces or worksuecessivelyto the operating 'instriimentality,a feed r611 for chi-operation with I eachbed ron in turn for feedin thework past the operatinginstrumentality, and meansforautomaticallyadjiisting the feed rollto each'bed roll as the lattercomes into coaoperati'tie relation With respect to the feed roll and theOperating instrument-ality.

15. In a l nachine'for operating upon hides, skins,- leather andothersimilar pieces of work, an instrumentality for operating on the work, aniovablymounted feeding member adj aeent to the operatinginstrumentalay, a plurality of bed rollsfor supporting pieces qfwe r aturret member carrying the and movable to present the bed mentality, aplurality of bed-rolls for sup- "erating instruinentality, and ban"projeo rolls insuccession in cooperativefreeman lr Q16. In a'niaeliine, for F "hidesQskinS, leather and other similar piecesoperating "jipon of 'Work, an 'ins'ti'urnentalit q j v I I V y foroperating on the Work, a movably mounted re ainmember "adjacent to 'theoperating instrunient'ality, "a plurality of bed rolls for s pportingpieces "of Work, I a "turret 'rnernber carrying the bed rails andrhovable to prea sentthe bed rolls insuccession'inico-operatif'verel'ation With respect to the operatinginstruiiientality and the "feeding member, and means associated Witheachbedroll operative to eontrolthe position of the feeding,

as the latter i's'coming into oo-operati ye relation with respect to theoperating instrumentality. I

17. In a inac'hine for operating upon, hides, skins, leather andjoth'ersimilar pieces of Wo1k, a'n instruiriental'ity for operating on theWork, a 'Inova'b'ly indented "feeding member adjacent to theoperatirigiinstruporting pieces of Work, a turret "nieni'ber carrying the bedrolls and inor'able to pre sent the bed rolls in succession in'co-operati've r lation with respect to the operating instruinentalityand the feeding member, boxe for supporting ,'each bed roll atits endsin the turret ineniber, an boxes be g adjustable so that the bed roll bepositioned in predetermined relation to the options on the boxes forcausing rnovenient of 1'05 the feeding Inernberjnto properco-operativerelation with respect tothebed roll a s the latter is coming into(lo-operative relation with respect to the operating instrumeny- 18; Ina machine for operating upon. hides, skins, leather and other similarpieces of Work, an instrumentali ty for operating on the work, a movablyiiie nber adjacent to the operating' 'in'strnni'enta'lity, a plii'ralityof bed rolls forsupporting pieces of, Work, a turret member carrying thebed rolls and movable to. pre sent the bed rolls in successionineo-operatire relation With respect tothe operating {20 instrun entalityand the feeding member, levers for 'sripporting the feeding inember,boxes for 'supportin 'g each bed rollat its ends in the turret Iheinber,said boxesjbeing adjustable so that the bed rollinaybepo 'i tioned inpredetermined relation to the eratin'g instru m'e entality, and cam;projections on the boxes for controllingthe operation of the leverstocausemovement of the feeding member into proper co-operati've mounted.feeding relation with respect to the bed roll as the latter iscomin'ginto co-operative relation with respect to the operatinginstrumentality.

19. In machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work, afeeding member movably mounted adjacent to the'operatinginstrumentality, a plurality of bed rolls for supporting pieces of work,a turret member carrying the bed rolls and movable to present the bedrolls in succession in co-operaftive relation with respect to theoperating instrumentality and the feeding member,

boxes for supporting the ends of each bed roll in the turret member,means for yield ingly backing the boxes so that the bed roll may yieldwith respect to the operating instrumentality to accommodate variationsin thickness of the work, andmeans controlled by the boxes fordetermining the position of of work, an instrumentality for operating onthe work, a feeding member movably mounted adjacent to the operatinginstrumentahty, a plurality of bed rolls forsupporting pieces of work, aturret member carrylng the bed rolls and movable to present the bedrolls in succession in co=operative relation with respect to theoperating instrumentality and the feeding member, each bed roll beingyieldingly adjustable to accommodate variations in the thicknessof thepiece of work between it and the opera-V ting ,instrumentality, andmeans for automatically adjusting the feeding member with respect to thebed roll as the 'latter moves in accommodating itself to said varia-'trons 1n the work.

21. In a machine for operating upon 1 hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work, afeeding member movably mounted adjacent to the operatinginstrumentality, a plurality of bed rolls for supporting pieces of work,a turret member carrying the bed rolls and movable to present the bedrolls in succession in co-operative relation with respect to theoperating instrumentality and the feeding member, each bed roll'beingyieldingly adjustableto accommodate variations in the thickness of thepiece of work between it and the operating instrumentality, and meansassociated with each bed roll for automatically adjusting the feedingmember with respect to the'bed roll as the latter moves in accom--modating itself to said variations in the the bed rolls in successioninto co-operative relation withrespect to the operating instrumentalityand the feeding member, and means associated with each bed roll forcausing movement of the feeding member into proper co-op'erativerelation with respect to the bed roll.

' 23. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, aninstriunentality for operating on the work, amovably'mounted feeding member adjacent to the operatinginstrumentality, a plurality of bed rolls for supporting pieces of work,means for carrying the 'be drolls in succession intoco-operativerelation with respect to the operating instrumentality and the feedingmember, and means associated with the carrying means for moving thefeeding member into proper co-operative relation with respect to eachbed roll in turn.

24. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work, amovably mounted feeding member adjacent to the operating instrumentality, a plurality of bed rolls for supporting pieces of work, aturret member movable intermittently for carrying the bed rolls insuccession into co-operative relation with respect to the operatinginstrumentality and the feeding member, a support for the feedingimember, and turret controlled means for locking the support of thefeeding member with the latter in .00- operative relation to a bed rollat' the end of each movement of the turret member.

25. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work, amovably mounted feeding member adjacent to the operatinginstrumentality, a plurality of bed rolls for supporting pieces of work,a turret member for carrying the bed rolls in succession intoco-operative relation with respect to the operating instrumentality andthe feeding member, a support for the-feeding member, means controlledby each bed roll for moving the feeding member and its support so thatthe feeding member is brought into proper co-operative relation to thebed roll irrespective of the size of the latter, and turret controlledmeans for locking the feeding member support in the position to whichigsrcglm ofwo1'k,an instrumentality for operating :on the work, a bedroll movable between work receiving and Work presenting positio'ns withrespect to "the operating instrume ntality, and means formaintaining'the j bed-rollwitha gi-ve'n'surface thereof facing upwardlyduring each movement of the 7 bed roll between work receiving and work:presenting positions.

-27. In -a "machine "for opera'ting 'up'on l'iides, -skins,-leather andother similar pieces "of work, an instrumentality "for operating {on-thework,a bed-roll, swing ELKIIIS fOPHI'OV- ing the bed roll between workreceiving and given surfacebn each bed roll facing up-' wardly during"movement of that bed roll between work recei vingan'd Workpresentingpositions.

"31.111 a machine for operating =upon hides, skins, leatherand othersimilar pieces of work, an instrumentality for operating onthe work, abed roll movable between Work receiving and work presenting positionswith respect 'to the operating instrumentality, and weighted 7 memberssupport- "ed by the bed roll and operativetomaintain the latterwvith agiven surface thereon facing upwardly duringmovement ofthe bed Frollbetween work receiving 7 and work presenting apositions.

32.111 a m'aohinefor operating upon hides,

' 'skins, le'ather andother similar pieces of work presentingpCJSlfiOHSWVlLh respect to work, an instrumentality 'for operating on'1the "operating ins'trumentality, and means for turn'ing the -bed roll=1n a direction i to keepa givensurface thereof'facing upwardthe 'work,:a bed roll movable between Work re'ceiving and work presenting positionswith respect to the operating instrumentally i during swinging movement"of the beds roll from i work receiving to 'work presenting Ti?position.

28. In a machine for operating-onhid-es, skins, leather 1 and 5 similarpieces of work, an instrumentality for operating "on the work, a bedroll-movable between work'rerespect to the operating instrumental'ity,mean's for maintaining the bed roll with a giv'en' portion of its-s'uri=a'ce tacing always in the' same direction cluring travel of thebed roll'from' Work receiving to Work presenting position, "an'd m'eans'for"rotating the bed I roll while in "work presenting relation withrespect to F the operating instrument-ality.

29.111 machi n'e for operating upon i 40 hides, skins, leatheran'd"other 'similarpieces c ji 4 presenting 'positions withrespect-tothebp- -=erating finstrumeiitality, and means "for ma'i'ntaming *eaehbedroll with a givensurface} thereof facingupwardlyduring movec Y 51 andwork presenting positions.

'30. In a machine "for =operatingupon liidesJskins, leather and othersimilar 'pieces ofwork, an instrumeiital'ity ifor operating on the work,a plurahtyof bed rolls,'-a'-tur- I 55 ret-member for carrying-the 'bedrolls in successi'on between woi k receiving-and --work presentingpositions' with"respect to the operati-nginstrumentaiity upon half turnmovements *of the turret member, and-means fror turning each be'd rollin a counterclockwise direction, continuously and-at the same rate-astherotating turret member would '-normally reverse the 1 upperandllo'wer surfaces of each "bedroll in each an "turn of the-entreemember, in order *tomaintain a ity, weighted members loosely :mounted 5at each end of the bed Troll, a :ratchet wheel 'ass'ociated with eachweighted L member and fastened-"to the bed roll,i and a Jratchetpawlcarried by weach weighted member to op- --erate on the'adjacent'ratchetwheelzto cause turning of the: bed roll during its'movement between workfreceivi'ng and Work ;presenting p0sitions.

33. In a machine for operating upon hides; skins, leather andother'similar pieces I of work, a bladed cylinder; a deed roll locatedadjacent to the cylinder, :a pluralityof bed trolls :for carrying piecesof work, means fonmoving the bedrolls'in succession from a workreceiving position into co-ope-rative relation with :respect to thebladed cylinder-and the feed roll, 'means i for mounting 'the feed rollfor movement *into; and out i of co-oper-ative relation with w respect-.to a bed roll in Work presenting position with respect to the bladed:cylinden and means for moving the feed roll out of the way of thatchedroll duringits return to Work receivingposition.

"34/111 a machine for operating upon hides, skins, leather'and othersimilar, pieces of work, a' bladed cylinder, a feed roll locatedadjacent to the cylinder, a plurality of bed rolls for carrying piecesofwoi'k, a turret member rotatable for moving the bed rolls in turnbetween work receiving and worlcpresenting positions with respect to thebladed'cylinder, a pivotal mounting for the feed" roll, and meanscontrolled bythe turret member forlifting the feed roll'out of thecircular path of each bed roll as the latter passes away fromoo-operative relation with'respect to the bladed cylinder.

35]In j a machine for operating upon hides, skins, leather and othersimilar pieces of'work, a bladed cylinder afeed roll located adjacent"to the cylinder, a plurality of bed rolls for carrying pieces of work,a

turret member for carrying thebed rolls in turn between work receivingand work presenting positions with respect to the bladed cylinder,pivoted members for supporting the feed roll, and a pair of leverslocated below the plane of the bladed cylinder and arranged to beoperated by the turret member to lift the feed roll as a bed roll iscoming into work presenting position with respect to the bladed cylinderso that the piece of work on the bed roll does not support the feed rollduring upward movement thereof.

36. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, a bladed cylinder, a feed roll 10-cated'adjacent to the cylinder, a plurality ofbed rolls for carryingpieces of work,

a turret member for, carrying the bed rolls successlvely between workreceiving and work presenting posltions wlth respect to the bladedcylinder, members for supporting thefeed roll arranged to be operated bythe turret member for lifting the feed roll as a bed roll is coming intowork presenting position with respect to the bladed cylinder so that thepiece of Work onthe bed roll does not support the feed roll duringupward movement thereof, and means for automatically adjusting the feedroll with respect to each bed roll irrespective of the size of thelatter.

37; In a machine for operating upon hides, skins, leather and othersimilar pieces of work, a bladed cylinder, a feed roll located adjacentto the cylinder, a plurality of bed rolls for carrying pieces of work, aturret member for carrying the bed rolls between work receiving and workpresenting positions with respect to the bladed cylinder,

members for supporting the feed roll ar- I ranged to be operated by theturret member for lifting the feed roll as a bed roll is coming intowork presenting position with respect to the bladed cylinder so that thepiece of work on the bed roll does not support the feed roll duringupward movement rolls for-carrying pieces of work, a turret member forcarrying the bed rolls between work receiving and work presenting.positions with respect to the bladed cylinder, members for supportingthe feed roll arranged to be operated by the turret member for liftingthe feed roll as a bed roll is coming into work presenting position withrespect to the bladed cylinder so that the piece of work on the bed rolldoes not support the feed roll during upward movement thereof, boxes formounting the ends of the bed roll in the turret member, and camprojections on the boxes for controlling the position of the feed rollwith respect to each bed roll irrespective of'the size of the latter.

89. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, a bladed cylinder, a feed roll locatedpresenting position with respect to the bladed cylinder so that thepiece of work on the bed roll does not support the feed roll duringupward movement thereof, boxes for mounting the ends of the bed roll inthe turret member, and cam projections on the boxesfor controlling theposition of the feed roll with respect to each bed roll irrespective ofthe size of the latter.

40. In a machine for operating upon hides, skins, leather, and othersimilar pieces of work, an instrumentality for operating on the work, abed roll for presenting a piece of work to the operatinginstrumentality, a feed roll for cooperation with the bed roll infeeding the work past the operating instru mentality, and means underthe control of the operator for changing the speed of the feed rollwithout affecting the speed of the operating instrumentality.

41. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, a bladed cylinder, a bed roll for presenting apiece of work to the cylinder, a feed roll for co-operation with the bedroll in feeding the work past the cylinder, means for driving thecylinder, means for driving the feed roll positively and independentlyof the driving means for the bladed cylinder, said feed roll drivingmeans comprising a set of gears of different sizes and means under thecontrol of the operator for selectively introducing the gears into thedriving means for the feed roll.

42. In a machine for operating upon hides skins, leather and othersimilar pieces of Work, an instrumentality for operating on the work, abed roll for presenting a piece of work to the operatinginstrumentality, a feed roll for co-operation' with the bed roll infeeding the work past the operating instrumentality, a set of gears ofdifferent sizes, a pinion constituting part of the feed roll drivingmeans, and means under the control p of the operator 'for shifting thepinion to engage selectively with the gears to vary the speed of thefeed roll.

48. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work, aplurality of bed rolls for carrying pieces of work, a turret member forcarrying the bed rolls in succession into cooperative relation withrespect to the operating instrumentality, boxes for supporting the endsof each bed roll in the turret member, said boxes beingadjustable in theturret member to position each bed roll in predetermined relation to theoperating instrumentality, and spring means for yieldingly backing eachbed roll so that it may yield away from the operating instrumentality toaccommodate variations in the thickness of the work, each said springmeans being adjustable in tension independently of the adjustment of itsassociated box.

44. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work, aplurality of bed rolls for carrying pieces of work, a turret member forcarrying the bed rolls in succession into cooperative relation withrespect to the operating instrumentality, boxes for supporting the endsof each bed roll in the turret member, said boxes being adjustable inthe turret member to position each bed roll in predetermined relation tothe operating instrumentality, a plate associated with each box andadjustable with respect thereto, and a spring means between each plateand box and arranged to be adjusted as to tension by the plate.

45. In a machine for operating on hides, I

skins, leather and similar pieces of work,

a bladed cylinder for operating on pieces of work, a pair of bed rollseach adapted to receive a piece of work looped thereover while in workreceiving position and arranged to be alternately moved intoco-operative relation with respect to the bladed cylinder, and means formounting each bed roll for rotation while it is supporting the workagainst the thrust of the cylinder.

46. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, an instrumentality for operating on the work,and a plurality of bed rolls for supporting pieces of work and movablein succession from workreceiving position to present the pieces of workin turn to the operating instrumentality and to co-operate therewith inthe treatment of the work, each bed roll when in work receiving positionbeing stationary and spaced a considerable distance from the operatinginstrumentality, and means for rotating each bed roll while itissupporting the work against the thrust of the operating instrumentality.

47. In a machine for operating upon hides, skins, leather and othersimilar pieces of work, a cylinder for operating on the work, meanscomprising a feed roll for feeding the work past the cylinder, a turretmember rotatable about an axis parallel to the cylinder, and a pluralityof bed rolls carried by the turret member and movable in succession fromwork receiving position to present the pieces of work in turn to thecylinder, each bed roll when in work receiving position being spaced aconsiderable distance from the feed roll and the cylinder.

In testimony whereof I have signed my name to this specification.

GEORGE E. McLAUGHLIN.

